/*
 * Copyright (C) 2009 M. Hautle.
 * 
 * This file is part of TrackedBean.
 * 
 * TrackedBean is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any later version.
 * 
 * TrackedBean is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License along with TrackedBean. If not, see <http://www.gnu.org/licenses/>.
 */
package ch.trackedbean.binding.guicomponents.renderers;

import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
import ch.trackedbean.binding.beanSpec.*;
import ch.trackedbean.binding.mapping.*;

/**
 * DefaultCellRenderer for "TrackedBean" tables.<br>
 * Changes the backgroundcolor according to the property state.
 * 
 * @author M. Hautle
 */
public class DefaultPropertyCellRenderer extends DefaultTableCellRenderer {
	/** Color indicating an technical error. */
	public static final Color TECHNICAL_ERROR = Color.RED.darker();

	/** Color indicating an error. */
	public static final Color ERROR = Color.RED;

	/** Color indicating an changed value. */
	public static final Color CHANGED = new Color(220, 220, 255);

	/** The tabelmapping owning this renderer */
	private final TableMapping mapping;

	/** Flag indicating if the backgroundcolor should be adapted according to the status of the represented cell. */
	protected boolean showStatus;

	/**
	 * Default constructor
	 * 
	 * @param showStatus True if the background should be adapted according to the cell state
	 * @param mapping The tablemapping owning this renderer
	 */
	public DefaultPropertyCellRenderer(final TableMapping mapping, boolean showStatus) {
		this.mapping = mapping;
		this.showStatus = showStatus;
	}

	/**
	 * Flag indicating if the backgroundcolor should be adapted according to the status of the represented cell.
	 * 
	 * @return True if the background gets adapted.
	 */
	public boolean isShowStatus() {
		return showStatus;
	}

	/**
	 * Flag indicating if the backgroundcolor should be adapted according to the status of the represented cell.
	 * 
	 * @param showStatus True to adapt the background.
	 */
	public void setShowStatus(boolean showStatus) {
		this.showStatus = showStatus;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public Component getTableCellRendererComponent(final JTable table, final Object value, final boolean isSelected, final boolean hasFocus, final int row,
			final int column) {
		super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);

		if (isSelected || !showStatus)
			return this;

		final Status status = mapping.getCellStatus(row, column);
		final BeanStatusFlag flag = status != null ? status.getFlag() : BeanStatusFlag.UNCHANGED;
		switch (flag) {
			case CHANGED:
				setBackground(CHANGED);
				break;
			case ERROR:
				setBackground(ERROR);
				break;
			case TECHNICAL_ERROR:
				setBackground(TECHNICAL_ERROR);
				break;
			default:
				setBackground(table.getBackground());
		}
		return this;
	}
}
